Signet International Holding, Inc.'s, corporate offices are located at:

                                       205 Worth Avenue
                                       Suite 316
                                       Palm Beach, Florida 33480 USA

For further information relating to our advancement in graphene related technologies, or for Investment Opportunities with Signet, please contact:

Mr. Ernest W. Letiziano, CEO
email:  eletiziano@aol.com
Phone: 561.832.2000

Address: 205 WORTH AVENUE, SUITE 316 | PALM BEACH, FLORIDA 33480 | USA